Unfortunately, this has proven to be a pretty complete disappointment. The plugin does work for our intended task (archives Outlook messages to Suite), but in the process, it generates a constant stream of error dialogs. It also appears to leave mailboxes in an inconsistent state. When you try to close Outlook, it spews dozens of "Save your work?" dialogs.
I've opened a support case for this, and after a week I've received no response. Based on the other responses in the support queue, it feels like V3 is abandon-ware. Maybe give this a try when V4 comes out.
It looks like V4 will not handle our use case since auto-archive now requires Azure. This has been an utter waste of time, and the complete lack of response for support cases or direct email just compounds the issue. View Add-on